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| Registros recuperados: 27 | |
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| Espírito-Santo,Mário M; Fernandes,G. Wilson; Allain,Luciana R; Reis,Ticiana R. F. |
| Several ecological, genetic, and environmental factors are known to influence tannin concentration in plant tissues. In this study, the effects of seasonality, water availability, and sex of the plant on tannin concentration in the dioecious shrub Baccharis dracunculifolia were assessed. The effects of water availability on plant shoot growth and its relationship to tannin concentration were also experimentally evaluated. Tannins occurred in B. dracunculifolia from November to May, peaking during the summer (December to March). However, no relationship between tannin concentration, rainfall and temperature was found. No difference in tannin concentration and shoot growth was found between plants in the irrigated and control treatments, this suggesting that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tannins; Baccharis dracunculifolia; Irrigation; Gender; Phenology. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061999000200006 |
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| Pais,Mara Patrícia; Varanda,Elenice Mouro. |
| Cerrado vegetation is composed of a mosaic of vegetation types, from campo sujo, dominated by herbs; campo cerrado and cerrado sensu stricto, with shrubby vegetation; to cerradão, with trees forming a denser forest. This physiognomic mosaic is related to differences in the water availability in the soil. Cerrado plants are considered physically and chemically well defended against herbivores, but there are no studies showing how plants allocate investment to various types of defensive mechanisms in different habitat physiognomies. The defensive mechanisms and the nutritional traits of a cerrado plant, Didymopanax vinosum (Cham. & Schltdl.) Seem. (Apiaceae), were compared along a vegetation gradient. Toughness, as well as water, nitrogen, cellulose,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Plant defenses; Tannins; Vegetation gradient; Water stress. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062003000300007 |
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| Araujo, Hellen Patricia de Oliveira; Paula, Nelcino Francisco de; Martello, Hariany Ferreira; Teobaldo, Ronyatta Weich; Pereira, Luana Barros; Mora, Lays Martins; Valentim, Jean Kaique; Antunes, Hellen Cristina Ferreira. |
| This work was carried out to evaluate the inclusion of urea and tannin in multiple supplements on ingestive behavior of cattle in pasture. The experiment was taken in the Cattle Nutrition pasture of the Experimental Farm of the Federal University of Mato Grosso, in 4 x 4 Latin square design with a factorial arrangement 2 x 2 (with and without urea and with and without tannin). Four Nellore bulls were used, with average weight of 470 kg and an average age of 20 months, randomly divided in: Supplement without urea and without tannin, Supplement without urea and with tannin, supplement with urea and without tannin, and supplement with urea and with tannin. The level of supplementation used was 1% of body weight during the dry period of the year. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural additives; Forage; Supplementation; Urea; Tannins. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47607 |
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| GIRARDI,FELIPE A.; TONIAL,FABIANA; CHINI,SILVIA O.; SOBOTTKA,ANDRÉA M.; SCHEFFER-BASSO,SIMONE M.; BERTOL,CHARISE D.. |
| The phytochemical profile and antimicrobial activity of cultivar (cv.) extracts of Lotus uliginosus (cvs. Trojan and Serrano), L. tenuis (cv. Larrañaga) and L. corniculatus (cv. São Gabriel) were investigated. The phytochemical analysis revealed tannins, coumarins and flavonoids in all extracts, with variations among cultivars, showing genotypic variability. By High Performance Liquid Chromatographic method, the cvs. Larrañaga and São Gabriel showed the highest percentage of catechin and epicatechin, respectively, and presented rutin, which was not detected in the other ones. These genotypes showed antifungal activity but not antibacterial one. The cv. Larrañaga inhibited the mycelia growth of Alternaria sp. and Fusarium graminearum while the cv. São... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternaria; Flavonoids; Fusarium; Tannins. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301295 |
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| Galvão,Marcos Aurelio Morais; Arruda,Alice Oliveira de; Bezerra,Isabelle Cristinne Ferraz; Ferreira,Magda Rhayanny Assunção; Soares,Luiz Alberto Lira. |
| ABSTRACT The stem bark and pods of “jucá” are widely used in Brazilian folk medicine and, despite their therapeutic relevancies, there are insufficient reports about their quality control. Both herbal drugs from the species are rich in tannins, which showed a lot of biological and economic interest. Thus, the purpose of this study was to evaluate the method for quantification of tannins in the stem bark and pods from L. ferrea. The performance of the method was tested against the influence of the most relevant parameters (reaction time; amount of drug; type and amount of precipitationagents; and, concentration of the reagents). The procedure was validated according to the literature. After optimization, the experimental conditions were established as: 30... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Libidibia ferrea; Quality control; Spectrophotometry; Tannins. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100431 |
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| Pereira,Juciane Abreu Ribeiro; Teixeira,Meryene Carvalho; Saczk,Adelir Aparecida; Barcelos,Maria de Fátima Piccolo; Oliveira,Marcelo Firmino de; Abreu,Wilson César de. |
| ABSTRACT Yacon (Smallanthus sonchifolius) is a tuberous root from the Andean region in the South America rich em water, fructooligosaccharides and phenolic compounds, some of which are natural antioxidants and may help prevent the deleterious action of free radicals in the body. The yacon has attracted much attention due to their potential health benefits to humans. In this study the levels of total phenolics, tannins, phenolic acids, and total antioxidant activity were measured in the peel and pulp of yacon tubers both in the fresh and flour forms. The flours of yacon presented higher concentrations of total phenolics and tannins, especially peel flour. The yacon pulp flour stood out as the main source of phenolic acids, mainly caffeic and chlorogenic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Smallanthus sonchifolius; Total phenolics; Tannins; Phenolic acids. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000500596 |
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| Fluck,Ana Carolina; Kozloski,Gilberto Vilmar; Martins,Andressa Ana; Mezzomo,Mariana Patricia; Zanferari,Filipe; Stefanello,Simone. |
| Inclusion of forage legumes in diet may improve tropical ruminant systems productivity and sustainability. However, it is not well stablished which chemical components more impact their nutritional value. The relationship between chemical composition and in vitro fermentation of tropical forage legume was evaluated with the objective of obtaining indicators of their nutritional value. Samples of Crotalaria spectabilis, Cajanus cajan, Macrotyloma axillare, Mucuna aterrina, Stylosantis sp. and Canavalia ensiformis, cut from plants at growth age between 47 to 110 days, were analysed. Total gas production showed negative correlation (P<0.05) with total N (R=-0.51), acid detergent fibre (ADF, R=-0.62) and acid detergent lignin (ADL, R=-0.65), and positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gas production; Lignin; Nutritional value; Phenolic compounds; Tannins. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000500010 |
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| Cortés,Soledad; Pulgar,Hugo; Sanhueza,Verónica; Aspé,Estrella; Fernández,Katherina. |
| The bark of Pinus radiata D. Don is recognized as a rich natural source of proanthocyanidins (PAs). Barks of Pinus radiata D. Don were extracted to produce a raw extract, and then purified to produce 4 fractions, with the aim of correlating its structural characteristics with the extract antioxidant capacity. The structural characterization was performed by acid catalysis in presence of phloroglucinol, foliowed by the detection of the components by High Precision Liquid Chromatography (HPLC). The subunits identified in the bark of Pinus radiata were: epicatechin- (4ß-2) - phloroglucinol (EC-P), catechin- (4á-2) - phloroglucinol (C-F) and (+) -catechin (C). The purified fractions showed different mean degree of polymerization (mDP), average molecular weight... |
| Tipo: Journal article |
Palavras-chave: Antioxidant activity; Bark; Pinus radiata; Tannins. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200002 |
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| ESSACK,Humaira; ODHAV,Bharti; MELLEM,John Jason. |
| Abstract This study investigated the effect of processing on anti-nutritional factors of thirteen traditional leafy vegetables collected in Kwa Zulu-Natal, South Africa. The aim was to determine whether processing reduced anti-nutrient levels of leafy vegetables. The vegetables were boiled in a plant-to-distilled water ratio of 1:4 (w/v) at 97 °C for a time period of 5 and 15 min. The vegetables studied were: Amaranthus dubius, Amaranthus hybridus, Asystasia gangetica, Bidens pilosa, Ceratotheca triloba, Chenopodium album, Emex australis, Galinsoga parviflora, Guilleminea densa, Momordica balsamina, Oxygonum sinuatum, Physalis viscosa and Solanum nigrum. From this study, it was determined that non processed samples contained anti-nutrients such as tannins,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Traditional leafy vegetables; Tannins; Phytic acid; Alkaloid; Oxalic acid; Cyanogenic glycoside. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300462 |
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| SOARES,Jackeline Cintra; SOARES JÚNIOR,Manoel Soares; FERREIRA,Karen Carvalho; CALIARI,Márcio. |
| Abstract The market for ready-to-drink fruit nectars is one of the fastest growing ones, because fruits provide beneficial effects for health maintenance and disease prevention, mainly due to the presence of phenolic compounds and their antioxidant activity. Amongst these, jambolan stands out, but is still little explored. The objective of the present work was to evaluate the influence of different proportions of jambolan pulp, sucrose and water on the physicochemical characteristics and sensory acceptance of jambolan nectars, besides determining the content of some bioactive compounds and the antioxidant capacity of the selected nectar, with a view to adding value to the fruit. Six jambolan nectar formulations were established using a Simplex design. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Color; Total phenolics; Anthocyanin; Tannins; Functional beverage. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000500008 |
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| Brandão,Taís Silva de Oliveira; Sena,Amanda Reges de; Teshima,Elisa; David,Jorge Maurício; Assis,Sandra Aparecida. |
| The physiological state of a fruit is closely related to ripening and climatic conditions during the growing period when the fruit undergo changes in color, texture, and flavor. The ripening of the fruit can involve a complex series of biochemical reactions with alteration in enzymes activities, phenols, tannins, and ascorbic acid. The activity of enzymes (carboximethylcellulase, polygalacturonase, and pectinlyase), the total concentration of phenolic compounds, condensed tannins, and vitamin C in five stages of maturation were studied. Significant changes were observed between the maturity stages. The phenolic compounds were higher at green stage (705.01 ± 7.41); tannins were higher at green/purple stage (699.45 ± 0.22). The results showed that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Syzygium cumini Lam.; Maturity; Total phenolic compounds; Tannins; Vitamin C; Enzymatic activity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612011000400004 |
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| Daudt,Carlos Eugenio; Fogaça,Aline de Oliveira. |
| In Brazil, the grape and wine production takes place mainly in the state of Rio Grande do Sul, and the region "Serra" is known as the traditional wine region. In the last years, new areas have emerged, with emphasis for the Campanha region; the red wines from this region have low acidity, little color intensity, and are wines to drink while young, even when produced from grape varieties such as Merlot and Cabernet Sauvignon. The objective of this study was to evaluate the influence of different maceration types on the phenolic compounds of Merlot wines made with grapes produced in two regions of Rio Grande do Sul, Serra and Campanha, as well as to identify the key differences between the wines produced. The localization of the vineyards seems to have more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Copigmentation; Anthocyanin; Tannins. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000200021 |
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| Pineda,Gloria Stefanny Hernández; Beltrán,Paulina Elizabeth Pedraza; Benaouda,Mohammed; García,José Manuel Palma; Nova,Francisca Avilés; Molina,Luisa; Ortega,Octavio Alonso Castelán. |
| ABSTRACT: The aim of the present research was to evaluate the effect of Pithecellobium dulce, Tagetes erecta and Cosmos bipinnatus on methane emission, milk yield and dry matter intake in dairy cattle. A 4×4 Latin square experimental design was employed, using four multiparous Holstein cows of 553±72.4kg body weight, at mid lactation and average milk yield of 17.3±3kg/day. The experiment lasted 92 days, divided into four experimental periods of 23 days each. All cows had free access to maize and alfalfa silage in a 50:50 proportion, 4kg of concentrate/day and ad libitum access to water. Treatments consisted in supplementation of 0.5kg/day of the experimental plants, with one control treatment without supplementation. Each cow received one of each treatment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Methane; Cattle; Climate change; Mitigation; Tannins. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001000650 |
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| Minho,Alessandro Pelegrine; Filippsen,Laerte Francisco; Amarante,Alessandro Francisco Talamine do; Abdalla,Adibe Luiz. |
| The aim of this study was to evaluate the potential uses of acacia extract (AE) on Trichostrongylus colubriformis control in sheep. The lambs were allocated in three groups of six animals. Two groups were experimentally infected with third-stage larvae of T. colubriformis and one was remained as non-infected control. Thirty days post-infection, the infected animals from treated group were supplemented with AE. During and after the treatment, the values of faecal eggs counts (FEC), number of third-stage larvae recovered per gram of faeces (LPG), number of FEC accumulated per animal during the treatment period, nematode egg viability, and worm burden were determined. Animals from non-infected group did not presented FEC values, during the experimental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sheep; Tannins; Nematodes; Egg count. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000600019 |
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| Zhong-Tao,Sun; Lin-Mao,Tian; Cheng,Liu; Jin-Hua,Du. |
| Apple pomace is a wasted resource produced in large quantities and its deposit has caused serious environmental problems, so it is significance to make the full utilization of the residues. The objectives of this work were to produce multienzyme bio-feed, biodegrade the anti-nutritional factors such as pectin and tannins in apple pomace, and obtain the nutritional enrichment of the fermented substrate. The mixture of apple pomace and cottonseed powder (1:1, w/w), supplemented with 1% (w/w) (NH4)2SO4 and 0.1% (w/w) KH2PO4, was proved to be the optimum medium for the mixed strains of Aspergillus niger M2 and M3 (2:1, w/w). The activities of pectinase, proteinase and cellulase achieved 21168 u/g, 3585 u/g and 1208u/g, and the biodegradation rates of pectin... |
| Tipo: Journal article |
Palavras-chave: Apple pomace; Aspergillus niger; Multienzyme bio-feed; Pectin; Solid state fermentation; Tannins. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000100002 |
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| Registros recuperados: 27 | |
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